K3.X vs K2.6

Post new topic   Reply to topic    DD-WRT Forum Index -> Broadcom SoC based Hardware
Author Message
cbm1442
DD-WRT Novice


Joined: 26 Jul 2014
Posts: 2

PostPosted: Sat Jul 26, 2014 17:11    Post subject: K3.X vs K2.6 Reply with quote
Hi, I am a bit of a newbie here and I need some clarification for this question. I have a linksys e3000 and want to put one of brainslayer's build on it but I do not know if I should go with K2.6 or K3.X.

Can someone explain the difference between the two?
Sponsor
slobodan
DD-WRT Guru


Joined: 03 Nov 2011
Posts: 1555
Location: Zwolle

PostPosted: Sat Jul 26, 2014 23:10    Post subject: Reply with quote
There is a difference in NVRAM size, 60 kB in K2.6 builds and 64 kB in K3.x builds. With a K3.x build you could get at most 70-80 Mbps WAN to LAN download speed, with a K26 build you could get at most 150 Mbps.
_________________
2 times APU2 Opnsense 21.1 with Sensei

2 times RT-AC56U running DD-WRT 45493 (one as Gateway, the other as AP, both bridged with LAN cable)

3 times Asus RT-N16 shelved

E4200 V1 running freshtomato 2020.8 (bridged with LAN cable)

3 times Linksys WRT610N V2 converted to E3000 and 1 original E3000 running freshtomato 2020.8 (bridged with LAN cable)


crashfly
DD-WRT Guru


Joined: 24 Feb 2009
Posts: 2026
Location: Sol System > Earth > USA > Arkansas

PostPosted: Sat Jul 26, 2014 23:59    Post subject: Reply with quote
Something else that should be mentioned is that the K3.x support drives larger than 2TB where as the K2.6 only support drives *up to* 2TB.
_________________
E3000 22200M KongVPN K26
WRT600n v1.1 refirb mega 18767 BS K24 NEWD2 [not used]
WRT54G v2 16214 BS K24 [access point]

Try Dropbox for syncing files - get 2.5gb online for free by signing up.

Read! Peacock thread
*PLEASE* upgrade PAST v24SP1 or no support.
cbm1442
DD-WRT Novice


Joined: 26 Jul 2014
Posts: 2

PostPosted: Sun Jul 27, 2014 0:10    Post subject: Reply with quote
Thanks for the reply. So for a linksys e3000 router I should stick with the K2.6 builds?
Gameman Advanced Kid
DD-WRT Guru


Joined: 18 Nov 2012
Posts: 1158

PostPosted: Sun Jul 27, 2014 3:23    Post subject: Reply with quote
k2.6 and k3.x will not affect your speed so much but the build versions will. so if i were you, i would just test to see which one works best for me (dont ask me, i havent tested in a while)

-HOWEVER-

if you need the features that k2.6 does not have, then k3.x may be your best bet. as for speeds, thats up to the build version.

_________________
For people who are new to the dd-wrt forums >> http://www.catb.org/~esr/faqs/smart-questions.html#rtfm

barryware wrote:
It takes a "community" to raise a router..


Internet Connection 1
Some Techicolor modem > Linksys WRT3200ACM

Internet connection 2
Ubiquiti Powerbeam Gen 2 > Netgear R9000

Official (but not really) dd-wrt General Discussion element/matrix chat

https://matrix.to/#/#dd-wrt-private-non-offical:matrix.org
MonarchX
DD-WRT User


Joined: 26 Sep 2009
Posts: 119

PostPosted: Wed Nov 18, 2020 0:29    Post subject: Reply with quote
I realize that K2.6 vs 3.X is an old debate, but What does K2.6 and K3.X mean? The number doesn't represent the Linux kernel that shows on the Status page.

3.X versions are still slower for older hardware, but what security fixes? Are newer Linux kernel security fixes part of K2.6 builds?
msoengineer
DD-WRT Guru


Joined: 21 Jan 2017
Posts: 1782
Location: Illinois Moderator

PostPosted: Wed Nov 18, 2020 1:34    Post subject: Reply with quote
MonarchX wrote:
I realize that K2.6 vs 3.X is an old debate, but What does K2.6 and K3.X mean? The number doesn't represent the Linux kernel that shows on the Status page.

3.X versions are still slower for older hardware, but what security fixes? Are newer Linux kernel security fixes part of K2.6 builds?


K2.x vs K3.x are indeed the linux kernel versions that you will find on the router status main page.

If you are most concerned about security then always run K3.x builds as things are still being updated AFAIK... not all security things can be rolled back into K2.4 and K2.6 kernels and so there might be some security flaws; though I have yet to see anything super glaring pose an issue since BS does a great job.... that said the K2.x builds tend to allow better WAN speeds if you're trying to eek out the most bandwidth from these old routers. K3.x is more CPU and Ram intensive eating away bandwidth possibilities...more so if you're trying to run Q.o.S. too. When you use these old routers they tend to be good to about 75mbps with any q.o.s. You can eek out a little more by using shortcut forward engine and overclocking the router, but q.o.s. is out the door then.

_________________
FORUM RULES

TIPS/TRICKS: Best QCA Wifi Settings | Latency tricks | QoS Port priority | NEVER USE MU-MIMO |
Why to NOT use MU-MIMO | Max Wifi Pwr by Country | Linux Wifi Pwr | AC MCS & AX MCS | QCA 5Ghz chnls to use | WIFI Freq WIKI | TFTP R7800 | Don't buy AX | IPERF3 How-To

[R9000]52396 nightly (Main Router)
[EA8500]43192 & 45493 (2xOffsite)
[R7800] resting
[WDR3600]BS 44715 (Offsite)
[A7v5]BS 43038 (Offsite+spare napping)
egc
DD-WRT Guru


Joined: 18 Mar 2014
Posts: 12840
Location: Netherlands

PostPosted: Wed Nov 18, 2020 7:28    Post subject: Reply with quote
One addition since a couple of months there are also Kernel 4 builds in the K3.x directory.
_________________
Routers:Netgear R7000, R6400v1, R6400v2, EA6900 (XvortexCFE), E2000, E1200v1, WRT54GS v1.
Install guide R6400v2, R6700v3,XR300:https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=316399
Install guide R7800/XR500: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=320614
Forum Guide Lines (important read):https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=324087
kernel-panic69
DD-WRT Guru


Joined: 08 May 2018
Posts: 14129
Location: Texas, USA

PostPosted: Wed Nov 18, 2020 11:55    Post subject: Reply with quote
2.4 kernels would definitely be a stretch to backport patches to, but 2.6 is still being patched by RHEL until the end of this month, if memory serves correctly. I doubt (m)any network appliance vendors are still patching kernels older than 3.x.

To reiterate what was said regarding K3.x builds:

BCM MIPS k4.4 coming soon to a(n older) router near you!

_________________
"Life is but a fleeting moment, a vapor that vanishes quickly; All is vanity"
Contribute To DD-WRT
Pogo - A minimal level of ability is expected and needed...
DD-WRT Releases 2023 (PolitePol)
DD-WRT Releases 2023 (RSS Everything)

----------------------
Linux User #377467 counter.li.org / linuxcounter.net
MonarchX
DD-WRT User


Joined: 26 Sep 2009
Posts: 119

PostPosted: Wed Nov 18, 2020 12:17    Post subject: Reply with quote
msoengineer wrote:
MonarchX wrote:
I realize that K2.6 vs 3.X is an old debate, but What does K2.6 and K3.X mean? The number doesn't represent the Linux kernel that shows on the Status page.

3.X versions are still slower for older hardware, but what security fixes? Are newer Linux kernel security fixes part of K2.6 builds?


K2.x vs K3.x are indeed the linux kernel versions that you will find on the router status main page.

If you are most concerned about security then always run K3.x builds as things are still being updated AFAIK... not all security things can be rolled back into K2.4 and K2.6 kernels and so there might be some security flaws; though I have yet to see anything super glaring pose an issue since BS does a great job.... that said the K2.x builds tend to allow better WAN speeds if you're trying to eek out the most bandwidth from these old routers. K3.x is more CPU and Ram intensive eating away bandwidth possibilities...more so if you're trying to run Q.o.S. too. When you use these old routers they tend to be good to about 75mbps with any q.o.s. You can eek out a little more by using shortcut forward engine and overclocking the router, but q.o.s. is out the door then.


Ping in games is more important to me than speed. I get about the same speed with K2.6 and 3.X (running latest Kernel 4.4). With K2.6, ping is consistently 15-20ms lower.

Any idea if K2.6 has POODLE vulnerability patch back-ported?
kernel-panic69
DD-WRT Guru


Joined: 08 May 2018
Posts: 14129
Location: Texas, USA

PostPosted: Wed Nov 18, 2020 12:21    Post subject: Reply with quote
I would have to dig through all the "new" / open tickets regarding poodle and sort through SVN to see if anything was implemented 5+ years ago, TBH. I just know that there haven't been many patches to the 2.6 kernel itself over the past two years or so that I have been here.
_________________
"Life is but a fleeting moment, a vapor that vanishes quickly; All is vanity"
Contribute To DD-WRT
Pogo - A minimal level of ability is expected and needed...
DD-WRT Releases 2023 (PolitePol)
DD-WRT Releases 2023 (RSS Everything)

----------------------
Linux User #377467 counter.li.org / linuxcounter.net
MonarchX
DD-WRT User


Joined: 26 Sep 2009
Posts: 119

PostPosted: Wed Nov 18, 2020 16:01    Post subject: Reply with quote
Is there a list of commonly considered stable builds of DD-WRT? I know past v24 all builds are considered beta, but perhaps some builds are known to be more stable than others?
egc
DD-WRT Guru


Joined: 18 Mar 2014
Posts: 12840
Location: Netherlands

PostPosted: Wed Nov 18, 2020 16:13    Post subject: Reply with quote
No not really it also depends on the router used.

Normally use one of latest builds unless there are unfavourable reports in the build threads.

For the R7800 I have a list in the R7800 guide but that is specifically for that router, what works on an R7800 (and similar) might brick a Broadcom router and vice versa

To get the best out of DDWRT and the forum, read and follow the forum guidelines:
https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=324087

_________________
Routers:Netgear R7000, R6400v1, R6400v2, EA6900 (XvortexCFE), E2000, E1200v1, WRT54GS v1.
Install guide R6400v2, R6700v3,XR300:https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=316399
Install guide R7800/XR500: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=320614
Forum Guide Lines (important read):https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=324087
Display posts from previous:    Page 1 of 1
Post new topic   Reply to topic    DD-WRT Forum Index -> Broadcom SoC based Hardware All times are GMT

Navigation

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You can attach files in this forum
You can download files in this forum